*{
  padding: 0;
  margin: 0;
  text-decoration: none;
  list-style: none;
}
html,body{
  height: 100%;
  width: 100%;
  background-color: rgb(245, 245, 245);
}
.app{
  width: 100%;
}
.app .body{
  height: 100%;
}